Pyridoxal 5′-phosphate, pyridoxal, and 4-pyridoxic acid in the paired serum and cerebrospinal fluid of children

Age-related changes in PLP, PL, and PA in serum and in CSF from pediatric patients and CSF-to-serum ratios of PLP and PL demonstrated in this study will provide valuable information for evaluating PLP supply to the central nervous system from the peripheral blood.